There are many food webs connecting different types of animals in river ecosystems. Within this accessible and engaging book, popular animals are categorized and given in-depth descriptions. Readers gain an understanding of an animal's needs for survival and broaden their knowledge of this essential science curriculum topic. An informative glossary and detailed graphic organizers provide extra insight. Compelling design elements including full-color photographs of animals in their natural habitats and visual representations of food webs add to this fun and fact-filled reading experience.